Ring spinning and twisting apparatus.



No. 778,558. I PATENTBD NOV. 1, 1904. G. 0. DRAPER.

RING SPINNING AND TWISTING APPARATUS.

APPLIOATION FILED AUG. 9, 1904.

1H1 MODEL.

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jwm W 3 7%? I V NITED STATES Patented November 1, 1904.

PATENT OFFICE.

GEORGE OTIS DRAPER, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORA- TION OF MAINE.

RING SPINNING AND TWISTING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 773,553, dated November-1, 1904.

Application filed August 9,1904.

T0 (0 whom it may concern.-

Be it known that I, GEORGE OTIS DRAPER, a citizen of the United States, residing at Hopedale, county of W'orcester, and State of Massachusetts, have invented an Improvement in Ring Spinning and Twisting Apparatus, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention has for its object the production of novel means for enabling spinning or twisting spindles to be run at very high speeds without destroying the traveler by friction.

In United States Patent No. 660,626 granted to me I have shown a fixed ring and a rotatable annular traveler-race within it, the traveler when speeded up carrying the traveler-race with it, and thereby so diminishing the friction upon the traveler that very high spindle speeds could be employed without destroying the traveler. In actual practice it has been found diflicult to make the travelerrace therein described, both on account of the mechanical construction and the cost.

In my present invention I have so constructed the traveler-race that it can be readily and cheaply made and with great accuracy, so that the practical objections hereinbefore noted are entirely overcome.

\Vhen the traveler-race is turned from a steel forging and hardened, it is diflicult to maintain it perfectly circular, and when stamped out of thin stock the tendency is to leave a sharp edge which wears the traveler.

In the present construction the traveler-race is stamped out of thin stock, sheet metal, and turned up at its inner edge, after which it is slightly swaged, making it substantially concavo-convex in cross-section and presentinga smooth rounding surface for the traveler to engage. The upturned portion extends up within the edge of an internal annular projection or flange at or near the top of the ring, so that when in motion the inner end of the traveler engages the traveler-race only.

The various novel features of my invention will be fully described in the subjoined speci- Serial 1%. 220,064. (No model.)

fication, and particularly pointed out in the following claims.

Figure 1 is a vertical diainetral section of a traveler-support embodying one form of my invention. Fig. 2 is a much enlarged detail of the left-hand side of Fig. 1 to show more clearly the construction. Fig. 8 is asectional View similar to Fig. 1 of a modified form of my invention, the ring-rail being omitted. Fig. 4: is a top or plan view, partly broken out and in section, of the structure shown in Fig. 3. Figs. 5 and 6 are sectional details of yet other modifications to be described; and Fig. 7 is a diametral view of the traveler-support similar to the structure shown in Fig. l, but illustrating another mode of supporting the traveler-race when at rest.

Referring to Figs. 1 and 2, the ring-rail 1 is provided with a holder 2 of usual or wellknown construction surrounding the spindleopening 3 of the rail, the holder beingadapted to engage and fixedly hold in position the annular fixed member of the traveler-support. Said member is shown as a ring of well-known construction having an upright annular web 4, an inturned annular projection or flange 5 at its upper end, and an oppositely-extended flange 6. The traveler-race is made from sheet metal struck or stamped out in circular form and then bent up at its inner edge, presenting-an annular hp 7, substantially at right angles to the base 8 of the travelerrace. The race when thus bent up is slightly swaged to present a smooth, rounding, or transversely convex surface 9 to be engaged by the inner end if of the traveler, the outer end 25 overhanging and cooperating with the outer flange 6 of the fixed member or ring in usual manner. As thus made the travelerrace is substantially concavo-convex in crosssection and very closely conforms to the contour of the inner flange or projection 5. To vertically support the traveler-race, a sleeve 10 is made to slip into the web of the fixed ring, and its height is such that the travelerrace can move axially a slight distance between the flange 5 and the top of the sleeve, the latter being supported by the ring-rail, as

shown. The annular base 8 projects beneath the flange and limits the upward movement of the traveler-race.

In operation as the traveler speeds up it acts to rotate the race, slowly at first and then at a rate closely approximating that of the traveler, the race at such time appearing to float above and out of contact with the sleeve 10. The entire wear of the inner end t of the traveler is taken up by the travelerrace, and as a consequence a very high spin-.

dle speed may be used without injury to the traveler.

By constructing the race as described no rough edges or surfaces are presented to be engaged by the traveler, thus reducing wear thereupon to a minimum.

In Fig. 7 the fixed ring and the travelerrace are substantially such as have been just described; but instead of making a continuous sleeve, as 10, I insert a split or compressible sleeve 11, which rests upon an internal annular shoulder 1 formed on the interior of the web 4 of the ring near its lower end.

Manifestly the periphery of the base 8 of the traveler-race must be slightly less than the internal diameter of the shouldered portion of the ring to permit the positioning of said traveler-race. V

In Figs. 3 and 4: the fixed annular member or ring has an upright cylindrical web 12, an outer flange 13 at its upper end, and an inner annular projection 14:, made as a flat split ring. This ring is com pressed and snapped into an annular horizontal groove 15, made in the ringweb at or near its upper end, the travelerrace being inserted in the split ring 1 1 before the latter is snapped into the groove 15. The split ring thus serves to hold the traveler-race in position and to support it when at rest without any additional means. The travelerrace 16 is made of sheet metal, as before, or it may be piping sawed in two, it being substantially semieylindrieal in cross-section, and thus projecting both under and over the projection or split ring 1 1, but still presenting a smooth rounding surface for the inner end of the traveler to engage.

In Fig. 5 the fixed ring has an outer flange 17 and an integral inner annular flange or projection 18,slightly below the upper end of the ring. The traveler-race is stamped out and then bent to present a flat outwardly-turned base 19 and an upturned portion 20 substantially at right angles thereto. (See full lines, Fig. The race is then applied, as shown, and the upper edge of the part 20 is bent over and outward above the projection 18, as shown at 21 in dotted lines, securing a general arrangement very similar to that shown in Figs. 3 and 4:, but avoiding the use of the detachable split ring.

In Fig. 6 the fixed ring has an outer flange 22 and an inner flange 23 opposite thereto, but of less depth, and the traveler-race is bent in cross-section into substantially U shape, with one side, as 24:, longer than the other side 25. The longer side 24 forms the base of the traveler-race and projects beneath the inner projection or flange 23 of the fixed ring, while the periphery of the shorter side 24 fits loosely within the edge of said flange 23 and the traveler-race again presents a smooth rounding surface for engagement by the inner end of the traveler. With this arrangement the sleeve 26 is necessary to support the traveler-race when at rest.

In the various forms of my invention herein shown and described the traveler-race is rotatable within and relatively to the fixed ring, and a part of said race is interposed between the traveler and the edge of the inner annular projection at or near the top of the fixed ring.

My invention is not restricted to the precise construction and arrangement herein shown and described, as the same may be modified or varied in different particulars by those skilled in the art without departing from the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a traveler-support, in combination, a fixed annular member having an inturned, annular projection at or near its upper end, and an oppositely-extended flange, and a travelerrace within and rotatable relatively to said fixed member and having an annular portion upturned within and adjacent the edge of said annular projection.

2. A traveler-support comprising, in combination, a fixed ring having an'internal flange or projection at or near its upper end, and an oppositely-extended flange, and a loose, rotatable traveler-race concavo-convex in crosssection within and loosely cooperating with said internal projection.

3. In a traveler-support, in combination, a fixed ring having inner and outer annular flanges at or near its upper end, a travelerrace within and rotatable relatively to said ring and having an annular portion upturned within and adjacent the inner flange of the ring, and means to support the traveler-race when at rest.

1. In a traveler-support, in combination, a fixed ring having inner and outer annular flanges at or near its upper end, and a freelyrotatable, annular traveler-race having a portion thereof extended beneath the inner flange of the ring, and an upturned portion within and adjacent the edge of said flange.

5. In a travelersupport, in combination, a fixed ring having inner and outer annular flanges at or near its upper end, and a freely rotatable, annular traveler-race having an upturned portion substantially at right angles to its body and within the edge of the inner flange of the ring.

6. In a traveler-support, in combination, a fixed ring having inner and outer annular flanges at or near its upper end, and a sheetmetal, annular traveler-race rotatably and axially movable Within and relatively to the ring and swag-ed to present a transversely convex inner circumference.

'7. In a traveler-support, in combination, a fixed ring having inner and outer annular flanges at orvnear its upper end, a metallic, annular traveler-race having its inner edge upturned Within the inner flange of the ring and interposed between it and the traveler, a traveler cooperating with the outer flange of the ring and the traveler-race, and means to support the latter When at rest.

In testimony whereof I have signed my name to this specification in the presence of tWo sub scribing Witnesses.

GEORGE OTIS DRAPER.

W'itnesses:

E. D. BANOROFT, ERNEST W. W001). 

